Lubricating-valve.



C. ySENN & D. C. DEMAREST.

LUBRICATING VALVE.

APPLIGATION FILED 11111.24, 1910.

1 984,805. Patented Feb. 14,1911.

UNiTE SATES PATENT FFCE.

CARL SENN AND DAVID C. DEMAREST, OF SAN FRANCISCO, CALIFORNIA.

LUBRICATING-VALVE.

Specification of Letters Patent.

Application med January 24, 1910.

Patented Feb. 14, 1911.

Serial No. 539,760.

To all whom it may conce/"fn:

Be it known that we, CARL SnNN and DAVID C. DnMAnns'r, both citizens oi the United States, residing in the city and county of San F ancisco and State ot California, have invented new and useful l.m provements in Lubricating-Valves, o't` which the following is a specification.

This invention relates to combined aircocks and lubricating valves.

The object of the invention is to provide a simple, cheap, practical lubricating and control valve for use on rockdrills and the like, whereby lubrication can take place automatically whenever the cock is turned to let air into the working cylinder oi the machine operated, irrespective of whether the cock is right side up, or upside down, or in any other position.

The invention consists of the parts and tho construction and combination of parts afi hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a vertical section on line anc, Fig. 3, with plug in elevation. Fig. .2 is a vertical section on line bnl), Fig. 3. Fig. 3 is a horizontal section on line c-c, Fig. l.

A represents a suitable casing having an inlet 2 and an outlet 3 registrable with the port 4 in the tapered plug valve 5. This plug is inserted into its seat in the casing through a suitable opening in one end thereof, which opening is normally closed by a screw cap 6. The cap has an internal pro. jection 7 forming a seat and guide for a spring 8 which presses against the plug to maintain the latter irm on its scat. The valve is turned by attaching a handle or crank to its outer exposed end 9. The space l0 inclosed in the casing between the lower end of the plug and the cap 6, constitutes an oil chamber which may be lled from time to time through an opening 11 by removing the screw closer 12.

The casing A is provided with two op posed pockets 13-14 between ports 2-3, which pockets are registrable with the port 4 in the plug each time the air is turned oli'. One of these pockets, as 13, is adapted to deliver oil into port 4 when the valve is upside down, that is, when the cap end 6 is on top, and the pocket 14 is adapted to deliver oil into the port 4 when the valve is right side up, or as shown in the position oi' Fig l. To this end the valve has two ports 15-16 which are registi-able with the corresponding pockets 13-14 through respective grooves 1718 in the casing whenever the `ports 2--3-4 are in communication. lVhen- I ever the valve is turned in this position pockets 13-14 are out o1 communication with the ports Q Jlw---fla lhe oil chamber l0, however, receives the lnll air pressure at such time through a port lt) in the plug,

. which latter is closed by a suitable valve, as

20, maintained normally seated by the spring 21; spring 21 being held in place und sup ported by the perlirated screw plug tapped into the valve. lort 15 opens directly into the oil chamber 10 near the lower end oit' the plug, while port 1G is continued by a tubular section Q3 threaded into the plug, and which tubular section Q3 extends nearly to the bottom ol the oil chamber 10.

The operation is as follows: lVhenever the valve is opened so as to bring the ports QwZ-A-ilinto register' and allow air toY pass through, the air pressure is admitted into the oil chamber on top ot the oil through port 1,1); valve 20 preventing the flow of oil into the port 4 in case the cock is inverted. lihis air pressure in the oil chamber acts to 'torce the oil through one or the other oil the ports 15 or 1G, according to the position ol the valve. Il. the valve is upright, as shown in Fig. l, the air pressure in the chamber will canse a certain amount of oil to pass up through the tube 23:3 and into the pocket or chamber 14 in the casing. li the cock is inverted the oil which would now flood the port 15 would be :forced into the pocket or chamber 13. When the valve is closed so as to shut ott' comunInication between the ports 2 and 3, port 4 is brought into communication with the pockets or chambers lil-41.4, and the oil in one or the other oi these chambers, according to the position ot' the cock, will llow then by gravity into port 4 to be blown out through port 3 the next time the valve is opened.

This valve has been particularly gotten up to meet the demand t'or a valve which would lubricate no matter in what position the machine might be working. In rockdrill ing it is quite common ior the miners to place their drills so as to work upwardly or at au incline or downwardly, and in so doing it is very often necessary for the machine to be set in such a position that the oil reservoir would practically be at the lowest point ot the valve. By having the two oil chambers, cach With its separate duct opening into the oil reservoir at different levels, it is quite immaterial What position the machine or valve stands in, because lubrication takes place just the same.

Having thus described our invention, what We claim and desire to secure by Letters Patent isl. The combination of a valve casing having main ports and an oil reservoir, a plug valve having a port registi-able with the main ports in the valve casing, said plug havingV means for admitting air pressure to the oil reservoir When the valve is turned to one position, and means connecting with the reservoir at different levels therein for admitting oil to said port from the reservoir When the valve is turned to another position irrespective of Whether the valve is right side up or upside down.

2. The combination of a valve casing having main ports and an oil reservoir, a plug valve having a port registrable with the main ports in the valve casing, said plug having means for admitting air pressure to the oil reservoir When the valve is turned to one position, and means for admitting oilto said port from the reservoir when the Valve is turned to another position irrespectiveof Whether the valve is right side up or upside down, said last-named means including two separate chambers in the valve oasing and registrable With the port in the plug when said port is out of register with said main ports in the casing, and said chambers having separate ports entering the reservoir at diierent levels therein.

rllhe combination of avalve casinghaving main ports and an oil reservoir, a plug valve having a port registrable with the main ports in the valve casing, said plug having means for admitting air pressure to the oil reservoir when thevalve is turned to one position, and means tor admitting oil to said port from the reservoir When the valve is turned to another position irrespective of Whether thevalve is right side up or upside down, said last-named means including two outlets for the oil at dilierent levels in the oil chamber, and said outlets conmnmicating` with the said port in the plug when said port in the plug is out of register With said main ports in the casing.

4. The combination of ava-ive casing having main ports and an oil reservoir, a plug having a port registrable with said main ports in the valve casing, said plug having a normally7 closed valved port in communication with both the reservoir and said port in the plug, said casing and plug incl'osing chambers which are out of communication with each other when the valve is open, said chambers connnunicating ,vit-h the reservoir at different levels, and said chambers communicating with said port in the plug when the valve is closed.

5. In a lubricating valve, the combination With a casing having an oil reservoir, of a plug for controlling the flow ot fluid through the valve casing, the plug having a main port, and also a valved port by which fluid pressure is admitted into the oil reservoir When the valve is open, the plug and casing cooperating to inclose sep arate oil chambers which open into the oil reservoir at different levels, and said chambers registrable with the main port in the plug When the valve is closed.

ln testimony whereof We have hereunto set our hands in the presence of txvo subscribing Witnesses.

CARL SENN. DAVID C. DEMAREST.

l/Vitnesses CHARLES Ennmmn, F. lV. Fnos'r. 

